=if(OR(A1<>1,A5<>1,A10<>1,A15<>1,A20<>1),3,"")
如果都等于1该如何,只要1个不等于1,等于3还是5?
=IF(or(A1<>1,A5<>1,A10,<>1,A15<>1,A20<>1),5,"")